- Title
- Slope stability analysis considering fully saturated poro-elasto-plasticity by an image-based scaled boundary finite element approach
- Creator
- Wijesinghe, Dakshith; Dyson, Ashley; You, Greg; Khandelwal, Manoj; Natarajan, Sundararajan; Chan, Andrew; Ooi, Ean Tat
- Date
- 2024
- Type
- Text; Journal article
- Identifier
- http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/200202
- Identifier
- vital:19357
- Identifier
-
https://doi.org/10.1016/j.enganabound.2023.10.011
- Identifier
- ISSN:0955-7997 (ISSN)
- Abstract
- Open pit mines are large geotechnical structures. Their stability is an important consideration in the mining industry. The deformations of geotechnical structures often involve the coupled interaction between the pore fluid pressure and the nonlinear deformation of soil, characterised by poro-elasto-plastic behaviour. This paper develops the scaled boundary finite element method (SBFEM) to address poro-elasto-plastic in slope stability problems. It builds upon a previously developed elasto-plastic formulation to consider the effect of pore fluid pressure and its interaction with the nonlinear deformation within the soil. The pore pressure field introduces an additional variable in the governing equations that is similarly discretised using SBFEM shape functions. The SBFEM is implemented together with a pixel-based quadtree mesh generation technique, enabling automatic meshing directly from digital images. This leads to efficient automation when modelling problems with iterative changes in the geometry such as in optimisation of construction processes during the rehabilitation of slopes. The formulation is validated first using a standard numerical benchmark. Application of the developed technique in construction applications in slopes where the stability and effect of pore water pressure is considered e.g., tailings dam construction and optimisation of backfilling process is demonstrated in three examples to demonstrate feasibility. © 2023 The Authors
- Publisher
- Elsevier Ltd
- Relation
- Engineering Analysis with Boundary Elements Vol. 158, no. (2024), p. 160-181
- Rights
- All metadata describing materials held in, or linked to, the repository is freely available under a CC0 licence
- Rights
- http://creativecommons.org/licenses/by-nc-nd/4.0/
- Rights
- Copyright © 2023 The Authors
- Rights
- Open Access
- Subject
- 4005 Civil engineering; 4017 Mechanical engineering; 4901 Applied mathematics; Optimisation; Poro-elasto-plastic; Scaled boundary finite element method; Slope rehabilitation; Slope stability
- Full Text
- Reviewed
- Funder
- Dakshith Ruvin Wijesinghe acknowledges the funds of the Henry Sutton PhD Scholarship from Federation University Australia that supports his PhD Studies.
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